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s390/sclp: keep sclp_early_sccb

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Keep sclp_early_sccb so it can also be used after initdata has been
freed. This is a prerequisite to allow printing a message from the
machine check handler.

Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2022-11-28 14:14:27 +01:00 committed by Alexander Gordeev
parent f9e5938ace
commit a4c41fe398
2 changed files with 1 additions and 4 deletions
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3
arch/s390/mm/init.c
View file

@ -208,9 +208,6 @@ void free_initmem(void)
__set_memory((unsigned long)_sinittext,
(unsigned long)(_einittext - _sinittext) >> PAGE_SHIFT,
SET_MEMORY_RW | SET_MEMORY_NX);
free_reserved_area(sclp_early_sccb,
sclp_early_sccb + EXT_SCCB_READ_SCP,
POISON_FREE_INITMEM, "unused early sccb");
free_initmem_default(POISON_FREE_INITMEM);
}

2
drivers/s390/char/sclp_early_core.c
View file

@ -17,7 +17,7 @@
static struct read_info_sccb __bootdata(sclp_info_sccb);
static int __bootdata(sclp_info_sccb_valid);
char *__bootdata(sclp_early_sccb);
char *__bootdata_preserved(sclp_early_sccb);
int sclp_init_state = sclp_init_state_uninitialized;
/*
* Used to keep track of the size of the event masks. Qemu until version 2.11